Trish Henry

Trish Henry

Trish Henry is a Senior Partner in the Dispute Resolution team in the Sydney office of King & Wood Mallesons and is a Board member of King & Wood Australia.

Trish is a leading telecommunications, competition and consumer law litigator and advisor, with over 25 years’ experience in that area. She principally advises clients on large scale disputes and investigations, and has acted on a range of high profile matters involving infrastructure access issues, ACCC investigations and litigations, and commercial disputes.

Trish is widely recognised as a leader in her field, having been named as a leading individual in various publications over recent years and listed in Best Lawyers over many years in six areas (Telecommunications Law, Litigation, Alternative/Dispute Resolution, Competition Law, Regulatory Practice and Information Technology Law).

She is described by clients as being “more than a legal advisor, helping [us] to navigate unchanted territory”, as someone who provides “superb service” and “timely delivery of critical tactical advice”, and also being “realistic, practical and giving you a way forward”.Representative matters.

In addition to being on the Board of King & Wood Mallesons Australia, she has held a number of key roles within the firm, including Practice Team Leader of the National Competition Law Team, National EEO Partner and Sydney Staff Partner.

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Representative matters

  • Telstra and AOC - Acted for Telstra in its successful defence to a challenge by the Australian Olympic Committee to Telstra’s advertising campaign. [Note – subject to appeal].

  • Telstra and NBN Co - Acted for Telstra in NSW Supreme Court proceedings against NBN Co in relation to payments relating to the National Broadband Network.

  • Colgate-Palmolive and ACCC – Acted for Colgate-Palmolive in Federal Court penalty proceedings brought by the ACCC alleging cartel conduct.

  • Advised Telstra on its Structural Separation Undertaking and its dealings with the ACCC under that Undertaking.

  • Advised a listed entity in relation to a confidential investigation by the ACCC into whether a settlement with another entity resulted in a breach of the merger and cartel provisions.

  • Advising a financial institution in relation to an ongoing confidential investigation by the ACCC into whether certain conduct raises issues under the cartel provisions.

  • Advised Telstra on its infrastructure sharing arrangements with NBN in relation to the rollout of the National Broadband Network.

  • Acted for Telstra in the ACCC investigation and Federal Court penalty proceedings in relation to access to Telstra’s exchange buildings.

  • Acted for Echo Entertainment and The Star in proceedings against the Australian Broadcasting Commission in which it was alleged the ABC used confidential information of The Star and Echo.

  • Telstra – advises on a range of telecommunications, regulatory and commercial issues and disputes on a range of matters, including disputes with land owners about towers, pricing disputes and other land access issues, as well as various ACCC related inquiries and investigations.

Professional memberships

  • Member, Trade Practices Committee, Business Law Section, Law Council of Australia

  • Member, American Bar Association - Antitrust group


Legal insights

Federal Court of Australia dismisses ACCC appeal, finding Pfizer had not misused its substantial market power for an anti-competitive purpose, and had not engaged in exclusive dealing conduct.

05 June 2018

The federal government announced yesterday that the Australian Securities and Investments Commission will receive a new mandate on competition issues.

20 March 2018

The Treasury Laws Amendment Bill was recently introduced which will, if passed, increase penalties for many breaches of the Australian Consumer Law.

16 February 2018

The Federal Government has directed the ACCC to hold an inquiry into the impact of digital “platform services” on the state of competition in media and advertising services markets.

04 December 2017